Lifting-jack



(No Model.) v G. W. BALL.

LIPTING JACK No. 510,230. Patented Dec. 5 1893 WITNESSES: lAVENTO/f I Bg/kw I ATTORNEYS.

I UNITED STATES PATENT OFFICE.

CHARLES W. BALL, OF COMMERCE, TEXAS.

LlFTlNCigJACK.

SPECIFICATION formingpart of Letters Patent No. 510,230, dated December5, 1893.

Application filed September '7, 1893. Serial No. 484,957. (No model.)

To all whom it may concern.-

Be it known that 1, CHARLES W. BALL, of Commerce, in the county of Huntand State of Texas, have invented a new and Improved Wagon-Jack, ofwhich the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved Wagon jack,which is simple and durable in construction, very efiective inoperation, and arranged for conveniently raising the rear or front axlewithout shifting the position of the hoisting lever in the post.

- The invention also consists of certain parts and details andcombinations of the same, as

will be hereinafter described, so far as completed. v

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in both the figures.

Figure 1 is a perspective view of the improvement, as arranged forraising the front axle; and Fig. 2 is a sectional side elevation of theimprovement arranged for engagement with the rear axle.

The improved wagon jack is provided with a suitably constructed post A,in the upper forked end of which is held the transversely extendingpivot B on which is fulcrumed the lever 0 provided with the usual handleend G and the hoisting end 0 On the top of the hoisting end 0 of thelever O is adapted to rest a block D, connected by links E with thesides of the hoisting end of the lever, as plainly illustrated in Figs.1 and 2, the said links standing in an inclined position, either on theouter end of the hoisting end 0 as shown in Fig. 2, or near the pivotend, as illustrated in Fig. 1.

When the device is in the position illustrated in Fig. 1, the jack canbe used for raising the front axle, as the end 0 directly ongages theaxle. When it is desired to raise the rear axle, then the operatorswings the block D outward into the position shown in Fig. 2 and engagesthe rear axle with the upper or top surface of the block D. The heightof the block D corresponds to the difference in height between the frontand rear axles, so that either of the axles can be raised in the mannerabove described without shifting the position of the lever O in the postB. A brace F is connected by a hinge G with the under side of the pivotend 0 of the lever O, 5 and the lower or free end of the said brace isadapted to engage a shoulder A formed on one side of the post A. Thebrace F is pivotally connected with a rod H which extends forwardthrough the forked end of the post A to pass through a staple I attachedto the under side of the handle end 0 of the lever 0.

Previous to engaging the axle, the handle end of the lever O is raised,to pass the hoisting end 0 or the block D under the axle, asabovedescribed, and, by the operator then bearing on the handle end 0',the axle is raised; when in this position the operator pulls on the rodH so as to draw the free end of the brace F into contact with theshoulder A, as illustrated in Fig. 2, so that the lever O is locked inplace.

When it is desired to lowerthe axle, the operator slightly bears on thehandle end 0 to permit the free end of the brace Fto swing from theshoulder A to unlock the lever and to permit of lowering the hoistingend to disengage the axle.

It will be seen that this wagon jack is very simple and durable inconstruction and permits" of conveniently raising the rear or front axlewithout shifting the hoisting lever in the post.

Having thus described my invention, I claim as new and desire tov secureby Letters Patent In a wagon jack, the combination with a post having aforked upper end, a hoisting lever pivoted between the forks of thepost, and means for holding the lever in an ap- 9o proximatelyhorizontal position, of a block of a height equal to the differencebetween the front and rear axles of a vehicle, and links pivoted to theblock a little at one side of the center of length of the block and tothe lever 5 a distance from its end about equal to the length of thesaid block, substantially as and for the purpose set .forth. 7 CHARLESW. BALL.

Witnesses:

A. J. GATES, G. O. GREEN.

